"It starts with a high level overview of Bitcoin and the associated blockchain, getting into the basics of how it works technically, and looking at the long-term implications. It then branches into blockchains more generally, Ethereum and eventually other cryptocurrencies and “appcoins.”

I’ve also included a short excerpt of what I think the core idea is from each piece so that if you just want to skim through this article, you should be able to pick up the central concepts in cryptocurrency."